Refrigerator



FIG. 1 is a Perspective View of a refrigerator showing our new design;

FIG. 2 is a Front Elevation View thereof;

FIG. 3 is a Rear Elevation View thereof;

FIG. 4 is a Left Side Elevation View thereof;

FIG. 5 is a Right Side Elevation View thereof;

FIG. 6 is a Top Plan View thereof; and,

FIG. 7 is a Bottom Plan View thereof.

The broken lines in the figure drawings show unclaimed environment only and form no part of the claimed design. 

CLAIM We claim the ornamental design for a refrigerator, as shown and described. 